Global Patent Index - EP 0524618 B1

EP 0524618 B1 19981007 - Image signal processing device

Title (en)

Image signal processing device

Title (de)

Bildsignalverarbeitungsvorrichtung

Title (fr)

Dispositif de traitement de signal d'image

Publication

EP 0524618 B1 19981007 (EN)

Application

EP 92112518 A 19920722

Priority

  • JP 5171692 A 19920310
  • JP 20627691 A 19910723
  • JP 30623691 A 19911121

Abstract (en)

[origin: EP0524618A2] An image signal processing device according to this invention is a device for processing an image signal. The device is arranged to input digital data corresponding to two kinds of color-difference signals in synchronism with a clock signal corresponding to a data rate of the digital data, reconstruct the inputted digital data corresponding to the two kinds of color-difference signals into digital data synchronized with a clock signal having a frequency which is an integer multiple of a color subcarrier frequency, and form digital data corresponding to a chrominance signal by using the reconstructed digital data corresponding to the two kinds of color-difference signals. Accordingly, it is possible to stably encode the two kinds of color-difference signals into the carrier chrominance signal by means of a simple construction without degrading the color-difference signals. <IMAGE>

IPC 1-7

H04N 9/64

IPC 8 full level

H04N 9/64 (2006.01); H04N 9/79 (2006.01); H04N 9/81 (2006.01); H04N 9/87 (2006.01); H04N 11/12 (2006.01)

CPC (source: EP US)

H04N 9/64 (2013.01 - EP US); H04N 9/7921 (2013.01 - EP US); H04N 9/81 (2013.01 - EP US); H04N 9/87 (2013.01 - EP US); H04N 11/12 (2013.01 - EP US)

Citation (examination)

EP 0301809 A1 19890201 - SONY CORP [JP]

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0524618 A2 19930127; EP 0524618 A3 19930303; EP 0524618 B1 19981007; DE 69227218 D1 19981112; DE 69227218 T2 19990512; US 5469218 A 19951121

DOCDB simple family (application)

EP 92112518 A 19920722; DE 69227218 T 19920722; US 91659092 A 19920720